|
800 Stamp |
Name : _________________ |
||
|
There are 240 stamps which are 8-cent stamps and 4-cent stamps. Altogether they cost 1480 cents. How many 8-cent stamps are there? |
There are 220 stamps which are 3-cent stamps and 9-cent stamps. Altogether they cost 1080 cents. How many 3-cent stamps are there? |
|
+( ) |
|
( )+ |
|
++[[ ]]++ |
||
| 800 130 110 100 70 120 ( 530 ) 150 130 100 110 120 ( 610 ) [[ 1140 ]] | ||
|
|
||